
	
public class test {
    public static void main(String[] args) {

        /
        int score=23;

        if(score==100) {
            System.out.println("A");
        }else if(score > 80 && score <= 99){
            System.out.println("B");
        }else if(score >= 60 && score <80){
            System.out.println("C");
        }else if(score < 60) {
            System.out.println("D");
        }

